package com.usian.listener;

import com.alibaba.fastjson.JSON;
import com.usian.pojo.User;
import org.apache.kafka.clients.consumer.ConsumerRecord;
import org.springframework.kafka.annotation.KafkaListener;
import org.springframework.stereotype.Component;

import java.util.Optional;

@Component
public class MsgListener {


    @KafkaListener(topics = "topic")
    public void xiaofei(ConsumerRecord<?,?> record){

        Optional<? extends ConsumerRecord<?, ?>> optional = Optional.ofNullable(record);
        if(optional.isPresent()){
            String  value = (String) record.value();

            User user = JSON.parseObject(value, User.class);
            System.out.println("=====消息内容"+user.toString());
        }

    }
}
